Home / 12,862.35-17,749.19-7,196.12

Finding the Fourth Proportional to 12,862.35, 17,749.19 and 7,196.12

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Solution

The fourth proportional to 12,862.35, 17,749.19 and 7,196.12 is: 9,930.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,862.35 : 17,749.19 = 7,196.12 : x
  2. Step 2: Convert to fraction form
    12,862.35/17,749.19 = 7,196.12/x
  3. Step 3: Cross multiply
    12,862.35x = 17,749.19 × 7,196.12
  4. Step 4: Simplify right side
    12,862.35x = 127,725,176.42
  5. Step 5: Solve for x
    x = 127,725,176.42/12,862.35
  6. Step 6: Final answer
    x = 9,930.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.